<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=2">
<meta name="theme-color" content="#222">
<meta name="generator" content="Hexo 5.2.0">
  <link rel="apple-touch-icon" sizes="180x180" href="/images/apple-touch-icon-next.png">
  <link rel="icon" type="image/png" sizes="32x32" href="/images/favicon-32x32-next.png">
  <link rel="icon" type="image/png" sizes="16x16" href="/images/favicon-16x16-next.png">
  <link rel="mask-icon" href="/images/logo.svg" color="#222">

<link rel="stylesheet" href="/css/main.css">


<link rel="stylesheet" href="/lib/font-awesome/css/all.min.css">
  <link rel="stylesheet" href="/lib/pace/pace-theme-minimal.min.css">
  <script src="/lib/pace/pace.min.js"></script>

<script id="hexo-configurations">
    var NexT = window.NexT || {};
    var CONFIG = {"hostname":"sekla.cn","root":"/","scheme":"Muse","version":"7.8.0","exturl":false,"sidebar":{"position":"right","display":"post","padding":18,"offset":12,"onmobile":false},"copycode":{"enable":false,"show_result":false,"style":null},"back2top":{"enable":true,"sidebar":false,"scrollpercent":false},"bookmark":{"enable":false,"color":"#222","save":"auto"},"fancybox":false,"mediumzoom":false,"lazyload":false,"pangu":false,"comments":{"style":"tabs","active":"valine","storage":true,"lazyload":false,"nav":null},"algolia":{"hits":{"per_page":10},"labels":{"input_placeholder":"Search for Posts","hits_empty":"We didn't find any results for the search: ${query}","hits_stats":"${hits} results found in ${time} ms"}},"localsearch":{"enable":false,"trigger":"auto","top_n_per_article":1,"unescape":false,"preload":false},"motion":{"enable":true,"async":false,"transition":{"post_block":"fadeIn","post_header":"slideDownIn","post_body":"slideDownIn","coll_header":"slideLeftIn","sidebar":"slideUpIn"}},"path":"search.xml"};
  </script>

  <meta name="description" content="迁移标准Quest-V将可迁移的地址空间限制为与以下VCPU相关联的地址空间：  当前CPU预算已经过期 正在休眠队列中等待  第一种情况下，VCPU直到下一次预算补充才能以前台优先级运行，后一种情况VCPU会被阻塞直到唤醒事件发生(例如IO请求完成或者资源变成可用状态)。 这样两种情况就阻止了VCPU在可运行的状态下被迁移，防止由于迁移延迟导致的CPU使用率下降。 Quest-V确保在迁移完成之">
<meta property="og:type" content="article">
<meta property="og:title" content="论文阅读RTSS-2014-Quest-V分离内核中的通信与迁移(3)实验评估">
<meta property="og:url" content="http://sekla.cn/2021/11/16/quest-v-3/index.html">
<meta property="og:site_name" content="Sekla&#39;s Blog">
<meta property="og:description" content="迁移标准Quest-V将可迁移的地址空间限制为与以下VCPU相关联的地址空间：  当前CPU预算已经过期 正在休眠队列中等待  第一种情况下，VCPU直到下一次预算补充才能以前台优先级运行，后一种情况VCPU会被阻塞直到唤醒事件发生(例如IO请求完成或者资源变成可用状态)。 这样两种情况就阻止了VCPU在可运行的状态下被迁移，防止由于迁移延迟导致的CPU使用率下降。 Quest-V确保在迁移完成之">
<meta property="og:locale" content="zh_CN">
<meta property="og:image" content="https://i.loli.net/2021/11/15/eFJNgA4aUItB16o.png">
<meta property="og:image" content="https://i.loli.net/2021/11/15/WZlx4dq3nDNucLK.png">
<meta property="og:image" content="https://i.loli.net/2021/11/15/9SatFE7cg64vUxP.png">
<meta property="og:image" content="https://i.loli.net/2021/11/15/q9YV1mksD3MiQRO.png">
<meta property="og:image" content="https://i.loli.net/2021/11/15/dUH4BM6VL5G7Seu.png">
<meta property="og:image" content="https://i.loli.net/2021/11/15/YshMFLWtXcIvJUK.png">
<meta property="og:image" content="https://i.loli.net/2021/11/15/QSDbxZwt5G8W4pI.png">
<meta property="og:image" content="https://i.loli.net/2021/11/15/gcD3AGQIe24P7EL.png">
<meta property="og:image" content="https://i.loli.net/2021/11/15/yJRG1HBg4bcNO2h.png">
<meta property="og:image" content="https://i.loli.net/2021/11/15/nOxCtcjH1ioU3h5.png">
<meta property="og:image" content="https://i.loli.net/2021/11/15/y2FXSxoPe1Vlurq.png">
<meta property="og:image" content="https://i.loli.net/2021/11/15/5gPqGIjUakm97K8.png">
<meta property="og:image" content="https://i.loli.net/2021/11/15/RBUNkabyrgdcl3s.png">
<meta property="article:published_time" content="2021-11-16T04:00:00.000Z">
<meta property="article:modified_time" content="2021-11-16T05:39:03.876Z">
<meta property="article:author" content="Sekla">
<meta property="article:tag" content="C">
<meta name="twitter:card" content="summary">
<meta name="twitter:image" content="https://i.loli.net/2021/11/15/eFJNgA4aUItB16o.png">

<link rel="canonical" href="http://sekla.cn/2021/11/16/quest-v-3/">


<script id="page-configurations">
  // https://hexo.io/docs/variables.html
  CONFIG.page = {
    sidebar: "",
    isHome : false,
    isPost : true,
    lang   : 'zh-CN'
  };
</script>

  <title>论文阅读RTSS-2014-Quest-V分离内核中的通信与迁移(3)实验评估 | Sekla's Blog</title>
  






  <noscript>
  <style>
  .use-motion .brand,
  .use-motion .menu-item,
  .sidebar-inner,
  .use-motion .post-block,
  .use-motion .pagination,
  .use-motion .comments,
  .use-motion .post-header,
  .use-motion .post-body,
  .use-motion .collection-header { opacity: initial; }

  .use-motion .site-title,
  .use-motion .site-subtitle {
    opacity: initial;
    top: initial;
  }

  .use-motion .logo-line-before i { left: initial; }
  .use-motion .logo-line-after i { right: initial; }
  </style>
</noscript>

  <script type="text/javascript" src="/js/my_js/clicklove.js"></script>
<!-- hexo injector head_end start -->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.12.0/dist/katex.min.css">

<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/hexo-math@4.0.0/dist/style.css">
<!-- hexo injector head_end end --></head>

<body itemscope itemtype="http://schema.org/WebPage">
  <div class="container use-motion">
    <div class="headband"></div>

    <header class="header" itemscope itemtype="http://schema.org/WPHeader">
      <div class="header-inner"><div class="site-brand-container">
  <div class="site-nav-toggle">
    <div class="toggle" aria-label="切换导航栏">
      <span class="toggle-line toggle-line-first"></span>
      <span class="toggle-line toggle-line-middle"></span>
      <span class="toggle-line toggle-line-last"></span>
    </div>
  </div>

  <div class="site-meta">

    <a href="/" class="brand" rel="start">
      <span class="logo-line-before"><i></i></span>
      <h1 class="site-title">Sekla's Blog</h1>
      <span class="logo-line-after"><i></i></span>
    </a>
      <p class="site-subtitle" itemprop="description">Keep Learning Keep Doing</p>
  </div>

  <div class="site-nav-right">
    <div class="toggle popup-trigger">
    </div>
  </div>
</div>




<nav class="site-nav">
  <ul id="menu" class="main-menu menu">
        <li class="menu-item menu-item-home">

    <a href="/" rel="section"><i class="fa fa-home fa-fw"></i>首页</a>

  </li>
        <li class="menu-item menu-item-about">

    <a href="/about/" rel="section"><i class="fa fa-user fa-fw"></i>关于</a>

  </li>
        <li class="menu-item menu-item-tags">

    <a href="/tags/" rel="section"><i class="fa fa-tags fa-fw"></i>标签<span class="badge">14</span></a>

  </li>
        <li class="menu-item menu-item-categories">

    <a href="/categories/" rel="section"><i class="fa fa-th fa-fw"></i>分类<span class="badge">23</span></a>

  </li>
        <li class="menu-item menu-item-archives">

    <a href="/archives/" rel="section"><i class="fa fa-archive fa-fw"></i>归档<span class="badge">100</span></a>

  </li>
  </ul>
</nav>




</div>
    </header>

    
  <div class="back-to-top">
    <i class="fa fa-arrow-up"></i>
    <span>0%</span>
  </div>
  <div class="reading-progress-bar"></div>


    <main class="main">
      <div class="main-inner">
        <div class="content-wrap">
          

          <div class="content post posts-expand">
            

    
  
  
  <article itemscope itemtype="http://schema.org/Article" class="post-block" lang="zh-CN">
    <link itemprop="mainEntityOfPage" href="http://sekla.cn/2021/11/16/quest-v-3/">

    <span hidden itemprop="author" itemscope itemtype="http://schema.org/Person">
      <meta itemprop="image" content="/images/avatar.jpg">
      <meta itemprop="name" content="Sekla">
      <meta itemprop="description" content="Sekla">
    </span>

    <span hidden itemprop="publisher" itemscope itemtype="http://schema.org/Organization">
      <meta itemprop="name" content="Sekla's Blog">
    </span>
      <header class="post-header">
        <h1 class="post-title" itemprop="name headline">
          论文阅读RTSS-2014-Quest-V分离内核中的通信与迁移(3)实验评估
        </h1>

        <div class="post-meta">
            <span class="post-meta-item">
              <span class="post-meta-item-icon">
                <i class="far fa-calendar"></i>
              </span>
              <span class="post-meta-item-text">发表于</span>
              

              <time title="创建时间：2021-11-16 12:00:00 / 修改时间：13:39:03" itemprop="dateCreated datePublished" datetime="2021-11-16T12:00:00+08:00">2021-11-16</time>
            </span>
            <span class="post-meta-item">
              <span class="post-meta-item-icon">
                <i class="far fa-folder"></i>
              </span>
              <span class="post-meta-item-text">分类于</span>
                <span itemprop="about" itemscope itemtype="http://schema.org/Thing">
                  <a href="/categories/%E6%93%8D%E4%BD%9C%E7%B3%BB%E7%BB%9F/" itemprop="url" rel="index"><span itemprop="name">操作系统</span></a>
                </span>
            </span>

          
            <span class="post-meta-item" title="阅读次数" id="busuanzi_container_page_pv" style="display: none;">
              <span class="post-meta-item-icon">
                <i class="fa fa-eye"></i>
              </span>
              <span class="post-meta-item-text">阅读次数：</span>
              <span id="busuanzi_value_page_pv"></span>
            </span><br>
            <span class="post-meta-item" title="本文字数">
              <span class="post-meta-item-icon">
                <i class="far fa-file-word"></i>
              </span>
                <span class="post-meta-item-text">本文字数：</span>
              <span>1.7k</span>
            </span>
            <span class="post-meta-item" title="阅读时长">
              <span class="post-meta-item-icon">
                <i class="far fa-clock"></i>
              </span>
                <span class="post-meta-item-text">阅读时长 &asymp;</span>
              <span>2 分钟</span>
            </span>

        </div>
      </header>

    
    
    
    <div class="post-body" itemprop="articleBody">

      
        <h3 id="迁移标准"><a href="#迁移标准" class="headerlink" title="迁移标准"></a>迁移标准</h3><p>Quest-V将可迁移的地址空间限制为与以下VCPU相关联的地址空间：</p>
<ol>
<li>当前CPU预算已经过期</li>
<li>正在休眠队列中等待</li>
</ol>
<p>第一种情况下，VCPU直到下一次预算补充才能以前台优先级运行，后一种情况VCPU会被阻塞直到唤醒事件发生(例如IO请求完成或者资源变成可用状态)。</p>
<p>这样两种情况就阻止了VCPU在可运行的状态下被迁移，防止由于迁移延迟导致的CPU使用率下降。</p>
<p>Quest-V确保在迁移完成之前，迁移线程不会被异步事件唤醒。 系统限制了等待I/O事件的线程不能被迁移。  </p>
<a id="more"></a>

<h2 id="实验评估"><a href="#实验评估" class="headerlink" title="实验评估"></a>实验评估</h2><p>论文评价环境为：</p>
<p>Gigabyte Mini-ITX </p>
<p>Intel Core i5-2500K 3.3GHz 4-core processor,</p>
<p>8GB RAM </p>
<p>Realtek 8111e NIC.</p>
<h3 id="可预测通信"><a href="#可预测通信" class="headerlink" title="可预测通信"></a>可预测通信</h3><p>5个不同的实验，用公式来测试最差情况下的往返通信时间。</p>
<p><img src="https://i.loli.net/2021/11/15/eFJNgA4aUItB16o.png" alt="image-20211115203800734"></p>
<p>设置信息大小为4MB对于接受和发送者，并且关闭共享内存信道上的缓存。</p>
<p>发送者和接受者线程都运行在各自VCPU上，并且休眠受控制的时间，以影响其周期之间的相移。</p>
<p><img src="https://i.loli.net/2021/11/15/WZlx4dq3nDNucLK.png" alt="image-20211115204243055"></p>
<p>发送方线程在传输之前添加忙等待延时，以影响VCPU的可用预算内的通信起点。上图为5个案例实验中执行10000次消息交换的结果，测量值总是在预测值内。</p>
<p>设计一组单向通信实验，以通过具有不同VCPU参数的4KB通道发送4MB消息，即消息需要使用多个数据槽。</p>
<p><img src="https://i.loli.net/2021/11/15/9SatFE7cg64vUxP.png" alt="image-20211115205042320"></p>
<p>下图为结果:</p>
<p><img src="https://i.loli.net/2021/11/15/q9YV1mksD3MiQRO.png" alt="image-20211115205117241"></p>
<p>观测值都在预估范围内。</p>
<h3 id="可预测迁移"><a href="#可预测迁移" class="headerlink" title="可预测迁移"></a>可预测迁移</h3><p>为了验证Quest-V迁移框架的可预测性，论文中使用了一个包括2个通信线程和另一个CPU密集型线程构成的任务组，来运行Canny边缘检测算法，对视频流帧进行处理。帧由罗技QuickCam PRO9000进行收集。安装在一个移动机器人上围绕波士顿大学中的竞技场室内跑道跑了一圈。为了避免可变比特帧影响到实验结构，用Canny算法反复处理下图所示帧，而不是实时的视频流。</p>
<p>我们可以在其他线程相互通信时，通过观察处理速率的变化来确定迁移对Canny线程的影响。</p>
<p><img src="https://i.loli.net/2021/11/15/dUH4BM6VL5G7Seu.png" alt="image-20211115210043748"></p>
<p>本节实验有两个运行的沙箱内核，每个内核中有5个VCPU，如图下设置：</p>
<p><img src="https://i.loli.net/2021/11/15/YshMFLWtXcIvJUK.png" alt="image-20211115210230218"></p>
<p>Canny线程都是从沙箱1迁移到沙箱2的目标，迁移请求在time 5开始，记录器线程用于以可预测的方式收集实验结果，以一秒的时间间隔对数据点进行采样报告。</p>
<p>对于使用消息传递的迁移，使用低优先级迁移VCPU(10/200)，直接内存复制的情况下，迁移线程与最高优先级VCPU关联(10/50)</p>
<p><img src="https://i.loli.net/2021/11/15/QSDbxZwt5G8W4pI.png" alt="image-20211115210920096"></p>
<p>上图显示了使用消息传递在两个通信线程之间迁移时，Canny线程的行为，y轴为帧率和消息吞吐量，Canny使用MIG_RELAX标志请求迁移，导致在传输到远程沙箱期间帧速率下降，但是通信线程不受影响。</p>
<p>下表表示估计最坏情况和实际迁移成本，最差情况由公式得出。</p>
<p><img src="https://i.loli.net/2021/11/15/gcD3AGQIe24P7EL.png" alt="image-20211115211331517"></p>
<p>下图展示了同样实验结果使用直接内存复制和标志位MIG_STRICT得出，由于迁移线程是自抢占的，右y轴周期显示其实际CPU消耗，图中显示没有任何线程受到迁移的影响，迁移线程CPU消耗峰值发生在Canny线程迁移过程中。</p>
<p><img src="https://i.loli.net/2021/11/15/yJRG1HBg4bcNO2h.png" alt="image-20211115212314567"></p>
<p>  下一个实验标志位设定为MIG_RELAX，并人为地通过为每个处理页目录条目的地址空间克隆过程增加忙等待时间，以增加迁移成本。</p>
<p><img src="https://i.loli.net/2021/11/15/nOxCtcjH1ioU3h5.png" alt="image-20211115213301625"></p>
<p>只有迁移线程受到了影响，每个沙箱监视器中的抢占点可以防止过度的预算超支，否则会影响虚拟CPU可调度性。</p>
<p>下图展示了同样实验重复在没有专用迁移线程下的情况，迁移是在IPI处理程序的上下文进行，改处理程序在禁用中断情况下运行。</p>
<p>处理程序执行期间会延迟所有其他线程和VCPU：</p>
<p><img src="https://i.loli.net/2021/11/15/y2FXSxoPe1Vlurq.png" alt="image-20211115213748857"></p>
<p>如果多个迁移请求同时向目标沙箱发送回，则会按照顺序处理，在启动迁移之前，源沙箱内核必须根本上锁定自身的迁移线程和目标中的迁移线程，进行试验验证，试验中两个沙箱同时向一个目标沙箱发出迁移请求，除了Canny和两个通信线程外，还在沙箱3中添加了一个计算1到2500素数的进程。</p>
<p><img src="https://i.loli.net/2021/11/15/5gPqGIjUakm97K8.png" alt="image-20211115214159104"></p>
<p><img src="https://i.loli.net/2021/11/15/RBUNkabyrgdcl3s.png" alt="image-20211115214222082"></p>
<p>上图所示结果，除了Canny帧率和消息传递吞吐量外，y轴还表示素数计数，在6秒后某时间点开始请求迁移到沙箱2中，Prime首先获取锁并立刻迁移，Canny的迁移请求延迟，然后在Prime迁移完毕后，Canny被迁移。</p>

    </div>
    
    
    

      <footer class="post-footer">
          
          <div class="post-tags">
              <a href="/tags/C/" rel="tag"><i class="fa fa-tag"></i> C</a>
          </div>

        


        
    <div class="post-nav">
      <div class="post-nav-item">
    <a href="/2021/11/14/quest-v-2/" rel="prev" title="论文阅读RTSS-2014-Quest-V分离内核中的通信与迁移(2)可预测通信与迁移">
      <i class="fa fa-chevron-left"></i> 论文阅读RTSS-2014-Quest-V分离内核中的通信与迁移(2)可预测通信与迁移
    </a></div>
      <div class="post-nav-item">
    <a href="/2021/11/20/ss-lab3-bufoverflow/" rel="next" title="Seed安全实验系列-(3)-buffOverFlow实验">
      Seed安全实验系列-(3)-buffOverFlow实验 <i class="fa fa-chevron-right"></i>
    </a></div>
    </div>
      </footer>
    
  </article>
  
  
  



          </div>
          

<script>
  window.addEventListener('tabs:register', () => {
    let { activeClass } = CONFIG.comments;
    if (CONFIG.comments.storage) {
      activeClass = localStorage.getItem('comments_active') || activeClass;
    }
    if (activeClass) {
      let activeTab = document.querySelector(`a[href="#comment-${activeClass}"]`);
      if (activeTab) {
        activeTab.click();
      }
    }
  });
  if (CONFIG.comments.storage) {
    window.addEventListener('tabs:click', event => {
      if (!event.target.matches('.tabs-comment .tab-content .tab-pane')) return;
      let commentClass = event.target.classList[1];
      localStorage.setItem('comments_active', commentClass);
    });
  }
</script>

        </div>
          
  
  <div class="toggle sidebar-toggle">
    <span class="toggle-line toggle-line-first"></span>
    <span class="toggle-line toggle-line-middle"></span>
    <span class="toggle-line toggle-line-last"></span>
  </div>

  <aside class="sidebar">
    <div class="sidebar-inner">

      <ul class="sidebar-nav motion-element">
        <li class="sidebar-nav-toc">
          文章目录
        </li>
        <li class="sidebar-nav-overview">
          站点概览
        </li>
      </ul>

      <!--noindex-->
      <div class="post-toc-wrap sidebar-panel">
          <div class="post-toc motion-element"><ol class="nav"><li class="nav-item nav-level-3"><a class="nav-link" href="#%E8%BF%81%E7%A7%BB%E6%A0%87%E5%87%86"><span class="nav-number">1.</span> <span class="nav-text">迁移标准</span></a></li></ol></li><li class="nav-item nav-level-2"><a class="nav-link" href="#%E5%AE%9E%E9%AA%8C%E8%AF%84%E4%BC%B0"><span class="nav-number"></span> <span class="nav-text">实验评估</span></a><ol class="nav-child"><li class="nav-item nav-level-3"><a class="nav-link" href="#%E5%8F%AF%E9%A2%84%E6%B5%8B%E9%80%9A%E4%BF%A1"><span class="nav-number">1.</span> <span class="nav-text">可预测通信</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#%E5%8F%AF%E9%A2%84%E6%B5%8B%E8%BF%81%E7%A7%BB"><span class="nav-number">2.</span> <span class="nav-text">可预测迁移</span></a></li></ol></div>
      </div>
      <!--/noindex-->

      <div class="site-overview-wrap sidebar-panel">
        <div class="site-author motion-element" itemprop="author" itemscope itemtype="http://schema.org/Person">
    <img class="site-author-image" itemprop="image" alt="Sekla"
      src="/images/avatar.jpg">
  <p class="site-author-name" itemprop="name">Sekla</p>
  <div class="site-description" itemprop="description">Sekla</div>
</div>
<div class="site-state-wrap motion-element">
  <nav class="site-state">
      <div class="site-state-item site-state-posts">
          <a href="/archives/">
        
          <span class="site-state-item-count">100</span>
          <span class="site-state-item-name">日志</span>
        </a>
      </div>
      <div class="site-state-item site-state-categories">
            <a href="/categories/">
          
        <span class="site-state-item-count">23</span>
        <span class="site-state-item-name">分类</span></a>
      </div>
      <div class="site-state-item site-state-tags">
            <a href="/tags/">
          
        <span class="site-state-item-count">14</span>
        <span class="site-state-item-name">标签</span></a>
      </div>
  </nav>
</div>
  <div class="links-of-author motion-element">
      <span class="links-of-author-item">
        <a href="https://github.com/ShenTiao" title="GitHub → https:&#x2F;&#x2F;github.com&#x2F;ShenTiao" rel="noopener" target="_blank"><i class="fab fa-github fa-fw"></i>GitHub</a>
      </span>
      <span class="links-of-author-item">
        <a href="mailto:584892986@qq.com" title="E-Mail → mailto:584892986@qq.com" rel="noopener" target="_blank"><i class="fa fa-envelope fa-fw"></i>E-Mail</a>
      </span>
  </div>



      </div>

      <iframe frameborder="no" border="0" marginwidth="0" marginheight="0" width=330 height=86 src="//music.163.com/outchain/player?type=2&id=1416875904&auto=0&height=66"></iframe>
      
    </div>
  </aside>
  <div id="sidebar-dimmer"></div>


      </div>
    </main>

    <footer class="footer">
      <div class="footer-inner">
        

        

<div class="copyright">
  
  &copy; 
  <span itemprop="copyrightYear">2022</span>
  <span class="with-love">
    <i class="fa fa-heart"></i>
  </span>
  <span class="author" itemprop="copyrightHolder">Sekla</span>
    <span class="post-meta-divider">|</span>
    <span class="post-meta-item-icon">
      <i class="fa fa-chart-area"></i>
    </span>
    <span title="站点总字数">288k</span>
    <span class="post-meta-divider">|</span>
    <span class="post-meta-item-icon">
      <i class="fa fa-coffee"></i>
    </span>
    <span title="站点阅读时长">4:22</span>
</div>
  <div class="powered-by">由 <a href="https://hexo.io/" class="theme-link" rel="noopener" target="_blank">Hexo</a> & <a href="https://muse.theme-next.org/" class="theme-link" rel="noopener" target="_blank">NexT.Muse</a> 强力驱动
  </div>

        
<div class="busuanzi-count">
  <script async src="https://busuanzi.ibruce.info/busuanzi/2.3/busuanzi.pure.mini.js"></script>
    <span class="post-meta-item" id="busuanzi_container_site_uv" style="display: none;">
      <span class="post-meta-item-icon">
        <i class="fa fa-user"></i>
      </span>
      <span class="site-uv" title="总访客量">
        <span id="busuanzi_value_site_uv"></span>
      </span>
    </span>
    <span class="post-meta-divider">|</span>
    <span class="post-meta-item" id="busuanzi_container_site_pv" style="display: none;">
      <span class="post-meta-item-icon">
        <i class="fa fa-eye"></i>
      </span>
      <span class="site-pv" title="总访问量">
        <span id="busuanzi_value_site_pv"></span>
      </span>
    </span>
</div>








      </div>
    </footer>
  </div>

  
  <script size="300" alpha="0.6" zIndex="-1" src="/lib/canvas-ribbon/canvas-ribbon.js"></script>
  <script src="/lib/anime.min.js"></script>
  <script src="/lib/velocity/velocity.min.js"></script>
  <script src="/lib/velocity/velocity.ui.min.js"></script>

<script src="/js/utils.js"></script>

<script src="/js/motion.js"></script>


<script src="/js/schemes/muse.js"></script>


<script src="/js/next-boot.js"></script>




  















  

  
      

<script>
  if (typeof MathJax === 'undefined') {
    window.MathJax = {
      loader: {
        source: {
          '[tex]/amsCd': '[tex]/amscd',
          '[tex]/AMScd': '[tex]/amscd'
        }
      },
      tex: {
        inlineMath: {'[+]': [['$', '$']]},
        tags: 'ams'
      },
      options: {
        renderActions: {
          findScript: [10, doc => {
            document.querySelectorAll('script[type^="math/tex"]').forEach(node => {
              const display = !!node.type.match(/; *mode=display/);
              const math = new doc.options.MathItem(node.textContent, doc.inputJax[0], display);
              const text = document.createTextNode('');
              node.parentNode.replaceChild(text, node);
              math.start = {node: text, delim: '', n: 0};
              math.end = {node: text, delim: '', n: 0};
              doc.math.push(math);
            });
          }, '', false],
          insertedScript: [200, () => {
            document.querySelectorAll('mjx-container').forEach(node => {
              let target = node.parentNode;
              if (target.nodeName.toLowerCase() === 'li') {
                target.parentNode.classList.add('has-jax');
              }
            });
          }, '', false]
        }
      }
    };
    (function () {
      var script = document.createElement('script');
      script.src = '//cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js';
      script.defer = true;
      document.head.appendChild(script);
    })();
  } else {
    MathJax.startup.document.state(0);
    MathJax.texReset();
    MathJax.typeset();
  }
</script>

    

  

<script src="/live2dw/lib/L2Dwidget.min.js?094cbace49a39548bed64abff5988b05"></script><script>L2Dwidget.init({"pluginRootPath":"live2dw/","pluginJsPath":"lib/","pluginModelPath":"assets/","tagMode":false,"debug":false,"model":{"jsonPath":"/live2dw/assets/shizuku.model.json"},"display":{"position":"left","width":250,"height":500},"mobile":{"show":false},"react":{"opacity":0.9},"log":false});</script></body>
</html>

<script type="text/javascript" src="/js/src/love.js"></script>
